Charged particle multiplicity distributions ine+e− annihilation at 29 GeV: a comparison with hadronic data
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- Derrick, M., Gan, K.K., Kooijman, P. et al. Z. Phys. C - Particles and Fields (1987) 35: 323. doi:10.1007/BF01570767
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The charged particle multiplicity distributions for two-jet events ine+e− annihilation at 29 GeV have been measured using the High Resolution Spectrometer at PEP. A Poisson distribution describes the data for both the complete event and for the single jets. In addition, no correlation is observed between the multiplicities in the two jets of an event. For fixed values of the prong number of the complete event, the multiplicity sharing between the two jets is in good agreement with a binomial distribution. The rapidity gap distribution is exponential with a slope equal to the mean rapidity density. These observations, which are consistent with a picture of independent emission of single particles, are contrasted to the results from soft hadronic collisions and conclusions are drawn about the nature of clusters.